Describes an undergraduate organic chemistry laboratory experiment which utilizes the solvolysis of organic halides to demonstrate first and second order reaction kinetics. The experiment also investigates the effect of a change of solvent polarity on reaction rate, common-ion and noncommon-ion salt effects, and the activation parameters of a…

Describes an undergraduate chemistry experiment which utilizes small samples of Californium 252 as a neutron source for the activation of 12 other elements. The students prepare decay curves of the radioactive isotopes and perform nondestructive activation analyses for gram amounts of some elements. (MLH)

Describes and compares three analytical methods of interpreting constant acceleration data from a stroboscopic picture or spark record. (CP)

Describes five ways for harnessing solar energy and lists references containing suggestions for classroom experimentation. (LS)

Experiments using soap films illustrate some of the most basic theorems concerning networks in a geometric framework. (SD)

Describes thin-layer chromatography experiments in which the students separate natural products, such as paprika, chile powder, and peppers. (MLH)

Describes an undergraduate chemistry experiment in which an atomic absorption spectrophotometer is used for recording flame emission spectra of the diatomic carbon molecule. (MLH)

In an experimental approach to the teaching of General Mathematics, students work individually on projects; two teachers work together with the class. Although evaluation is incomplete, the authors feel the approach has had a positive effect on student motivation. (SD)

Suggests that Experiment 13.2 (c) of the Nuffield 0-Level Chemistry Course be banned since the oxidation of lithium under very humid conditions can cause an explosion. (LS)

Article investigated the effects of inanimate stimuli upon the learning behaviors of children as well as the presence of their mothers in a learning environment. (RK)

Describes applications of mechanical principles based on the theory of flight. Includes a discussion of aerofoils and lift, aircraft structures, aircraft performance, and laboratory experiments. (GS)